> Are there even Delphi enthusiasts still, or is it just nostalgia?
There are.
There is a major commercially relevant DAW produced in Delphi. You can figure out which one.
> I believe Electron and web technologies are superior for UIs given their pragmatism and ubiquity.
This opinion is questionable given a clearly narrow view. Outside of this bubble they aren’t ubiquitous.
There are plenty of LOB apps still used and maintained in VB6. One of the most heavily used applications in the US federal government is a C++Builder app (the C++ RAD counterpart to Delphi) - it is a piece of crap, but that’s a factor of the authors not the language - and when it was first released more than 20 years ago it started up in a few seconds on hardware at the time with slow spinning disks! Looking at the vast majority of LOB web apps - nothing has gotten better on that front.
Are there even Delphi enthusiasts still, or is it just nostalgia? Would the people that claim Delphi is superior use it?